source: trunk/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp@ 595

Last change on this file since 595 was 561, checked in by Dmitry A. Kuminov, 15 years ago

trunk: Merged in qt 4.6.1 sources.

  • Property svn:eol-style set to native
File size: 18.1 KB
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1/****************************************************************************
2**
3** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
4** All rights reserved.
5** Contact: Nokia Corporation ([email protected])
6**
7** This file is part of the QtOpenGL module of the Qt Toolkit.
8**
9** $QT_BEGIN_LICENSE:LGPL$
10** Commercial Usage
11** Licensees holding valid Qt Commercial licenses may use this file in
12** accordance with the Qt Commercial License Agreement provided with the
13** Software or, alternatively, in accordance with the terms contained in
14** a written agreement between you and Nokia.
15**
16** GNU Lesser General Public License Usage
17** Alternatively, this file may be used under the terms of the GNU Lesser
18** General Public License version 2.1 as published by the Free Software
19** Foundation and appearing in the file LICENSE.LGPL included in the
20** packaging of this file. Please review the following information to
21** ensure the GNU Lesser General Public License version 2.1 requirements
22** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
23**
24** In addition, as a special exception, Nokia gives you certain additional
25** rights. These rights are described in the Nokia Qt LGPL Exception
26** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
27**
28** GNU General Public License Usage
29** Alternatively, this file may be used under the terms of the GNU
30** General Public License version 3.0 as published by the Free Software
31** Foundation and appearing in the file LICENSE.GPL included in the
32** packaging of this file. Please review the following information to
33** ensure the GNU General Public License version 3.0 requirements will be
34** met: http://www.gnu.org/copyleft/gpl.html.
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40****************************************************************************/
41
42#include "qtriangulatingstroker_p.h"
43#include <qmath.h>
44
45QT_BEGIN_NAMESPACE
46
47#define CURVE_FLATNESS Q_PI / 8
48
49
50
51
52void QTriangulatingStroker::endCapOrJoinClosed(const qreal *start, const qreal *cur,
53 bool implicitClose, bool endsAtStart)
54{
55 if (endsAtStart) {
56 join(start + 2);
57 } else if (implicitClose) {
58 join(start);
59 lineTo(start);
60 join(start+2);
61 } else {
62 endCap(cur);
63 }
64 int count = m_vertices.size();
65
66 // Copy the (x, y) values because QDataBuffer::add(const float& t)
67 // may resize the buffer, which will leave t pointing at the
68 // previous buffer's memory region if we don't copy first.
69 float x = m_vertices.at(count-2);
70 float y = m_vertices.at(count-1);
71 m_vertices.add(x);
72 m_vertices.add(y);
73}
74
75